This was not intended as an inscription, but it certainly serves as a testament to endurance.

This is part of a NASA post-flight inspection photo showing the Ground Elapsed Timer section of the Gemini VII control panel. Borman and Lovell have tabulated the completion of each day of their historic 14-day mission, with exclamations of relief and triumph at the end.

Unfortunately this sub-panel is inverted in the current display at NASM Udvar-Hazy Center, with the Ground Elapsed Timer rotated to display correctly.